Requires python3, python-uinput and RPi.GPIO

Make sure that user pi can open the uinput device.

Enable access to it:
sudo groupadd -f uinput
sudo gpasswd -a pi uinput
Open /etc/udev/rules.d/99-input.rules and add:
SUBSYSTEM=="input", GROUP="input", MODE="0660"
KERNEL=="uinput", GROUP="uinput", MODE="0660"